UITabBar在iOS中不显示图标

编程问答 2022-06-05

问题描述

我将以编程方式登录后创建一个标签栏控制器。所以我用下面的代码。我的问题是图标没有显示在标签栏中。

func makeTabBarController() -> Void {
        
        
        let storyboard = UIStoryboard(name: "Main",bundle: nil)
        let vc1 = storyboard.instantiateViewController(withIdentifier: "homevcID")
        
        
        let nav1 = UINavigationController()
        nav1.viewControllers = [vc1]
        nav1.tabBarItem = UITabBarItem(title: "Steps",image: UIImage(named: "music.png"),tag: 1)
        
        let vc2 = storyboard.instantiateViewController(withIdentifier: "historyvcID")
        
        let nav2 = UINavigationController()
        nav2.viewControllers = [vc2]
        nav2.tabBarItem = UITabBarItem(title: "History",image: UIImage(named: "music"),tag: 2)
        
        
        let tabBarVc = UITabBarController()
        //tabBarVc.tabBar.barTintColor = .green
        //tabBarVc.tabBar.tintColor = .white
        //tabBarVc.tabBar.unselectedItemTintColor = .systemGray
       // tabBarVc.tabBar.isTranslucent = true
        //
        
        tabBarVc.viewControllers = [vc1,vc2]
        
        window?.rootViewController = tabBarVc
        
    }

enter image description here

解决方法

为导航控制器设置rootViewController，如下所示：

let nav = UINavigationController(rootViewController: vc)

您可以尝试以下方法：

let nav1 = UINavigationController(rootViewController: vc1)
nav1.tabBarItem = UITabBarItem(title: "Steps",image: UIImage(named: "music.png"),tag: 1)
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